Has a dev clarified on whether the 30 minutes is between each "X/3" portion of the mission, or 30 minute cooldown from completing the WHOLE mission and taking a new one? 30 minutes between eack X/3 would be a boneheaded change.

I am VERY happy about this change. No it's stops idiots from keep changing instances CONSTANTLy. It was ANNOYING when people didn't stay in the zone, that made me angry. Now people will stay in the same group and keep fighting.